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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Marketing Manager	Paul Henriot	Bulgaria	1 2 3 4 5
2	Accounting Manager	Paul Henriot	England	1 2 3 4 5
3	Owner	Jaime Yorres	France	1 2 3 4 5
4	Marketing Manager	Antonio Moreno	Spain	1 2 3 4 5
5	Sales Associate	Paul Henriot	USA	1 2 3 4 5
6	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
7	Accountant	Hanna Moos	Austria	1 2 3 4 5
8	Owner	Pascale Cartrain	Italy	1 2 3 4 5
9	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
10	Sales Associate	Georg Pipps	Austria	1 2 3 4 5
11	Sales Consultant	Patricio Simpson	USA	1 2 3 4 5
12	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
13	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
14	Sales Agent	Matti Karttunen	Italy	1 2 3 4 5
15	Sales Associate	Elizabeth Lincoln	England	1 2 3 4 5
16	Sales Manager	Jaime Yorres	Brazil	1 2 3 4 5
17	Marketing Assistant	Howard Snyder	Argentina	1 2 3 4 5
18	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
19	Accounting Manager	Howard Snyder	Bulgaria	1 2 3 4 5
20	Accountant	Jaime Yorres	Austria	1 2 3 4 5
21	Accountant	Pascale Cartrain	France	1 2 3 4 5
22	Marketing Assistant	Pascale Cartrain	Argentina	1 2 3 4 5
23	Owner	Matti Karttunen	Argentina	1 2 3 4 5
24	Accounting Manager	Patricio Simpson	Austria	1 2 3 4 5
25	Owner	Pascale Cartrain	France	1 2 3 4 5
26	Sales Consultant	Elizabeth Lincoln	Germany	1 2 3 4 5
27	Marketing Assistant	Howard Snyder	England	1 2 3 4 5
28	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
29	Marketing Assistant	Howard Snyder	Bulgaria	1 2 3 4 5
30	Owner	Antonio Moreno	USA	1 2 3 4 5
31	Sales Representative	Matti Karttunen	England	1 2 3 4 5
32	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
33	Sales Consultant	Howard Snyder	Argentina	1 2 3 4 5
34	Accounting Manager	Jaime Yorres	Brazil	1 2 3 4 5
35	Accounting Manager	Jaime Yorres	Austria	1 2 3 4 5
36	Sales Associate	Paul Henriot	Italy	1 2 3 4 5
37	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
38	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
39	Sales Representative	Pascale Cartrain	France	1 2 3 4 5
40	Marketing Manager	Paul Henriot	Italy	1 2 3 4 5
41	Sales Associate	Howard Snyder	England	1 2 3 4 5
42	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
43	Accountant	Elizabeth Lincoln	Austria	1 2 3 4 5
44	Accountant	Antonio Moreno	Bulgaria	1 2 3 4 5
45	Sales Consultant	Matti Karttunen	USA	1 2 3 4 5
46	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
47	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
48	Sales Manager	Paul Henriot	Italy	1 2 3 4 5
49	Accountant	Jaime Yorres	England	1 2 3 4 5
50	Accounting Manager	Georg Pipps	Spain	1 2 3 4 5
51	Owner	Paul Henriot	Germany	1 2 3 4 5
52	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
53	Sales Associate	Patricio Simpson	USA	1 2 3 4 5
54	Accounting Manager	Paul Henriot	Italy	1 2 3 4 5
55	Accountant	Paul Henriot	USA	1 2 3 4 5
56	Marketing Assistant	Patricio Simpson	Austria	1 2 3 4 5
57	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
58	Accountant	Howard Snyder	Spain	1 2 3 4 5
59	Sales Manager	Paul Henriot	Germany	1 2 3 4 5
60	Accounting Manager	Georg Pipps	Argentina	1 2 3 4 5
61	Sales Consultant	Jaime Yorres	Bulgaria	1 2 3 4 5
62	Marketing Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
63	Owner	Howard Snyder	Germany	1 2 3 4 5
64	Marketing Assistant	Elizabeth Lincoln	Austria	1 2 3 4 5
65	Sales Agent	Georg Pipps	Spain	1 2 3 4 5
66	Owner	Patricio Simpson	Austria	1 2 3 4 5
67	Sales Representative	Jaime Yorres	Italy	1 2 3 4 5
68	Sales Representative	Paul Henriot	France	1 2 3 4 5
69	Marketing Manager	Antonio Moreno	Austria	1 2 3 4 5
70	Sales Representative	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
71	Sales Agent	Jaime Yorres	USA	1 2 3 4 5
72	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
73	Accountant	Antonio Moreno	Italy	1 2 3 4 5
74	Owner	Hanna Moos	Bulgaria	1 2 3 4 5
75	Sales Consultant	Elizabeth Lincoln	England	1 2 3 4 5
76	Sales Associate	Pascale Cartrain	Germany	1 2 3 4 5
77	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
78	Marketing Manager	Matti Karttunen	Austria	1 2 3 4 5
79	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
80	Sales Representative	Paul Henriot	France	1 2 3 4 5
81	Marketing Manager	Jaime Yorres	Austria	1 2 3 4 5
82	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
83	Marketing Assistant	Georg Pipps	Spain	1 2 3 4 5
84	Sales Manager	Antonio Moreno	Brazil	1 2 3 4 5
85	Marketing Manager	Paul Henriot	Brazil	1 2 3 4 5
86	Owner	Antonio Moreno	Spain	1 2 3 4 5
87	Marketing Assistant	Antonio Moreno	Argentina	1 2 3 4 5
88	Sales Representative	Antonio Moreno	Bulgaria	1 2 3 4 5
89	Sales Manager	Hanna Moos	Spain	1 2 3 4 5
90	Sales Consultant	Pascale Cartrain	USA	1 2 3 4 5
91	Sales Associate	Pascale Cartrain	France	1 2 3 4 5
92	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
93	Sales Associate	Hanna Moos	Brazil	1 2 3 4 5
94	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
95	Sales Associate	Pascale Cartrain	Austria	1 2 3 4 5
96	Accounting Manager	Antonio Moreno	Argentina	1 2 3 4 5
97	Marketing Assistant	Patricio Simpson	France	1 2 3 4 5
98	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
99	Sales Consultant	Patricio Simpson	Argentina	1 2 3 4 5
100	Marketing Assistant	Paul Henriot	Argentina	1 2 3 4 5


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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